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Description

The FS455 and FS456 are PC-to-TV video scan converters that are designed for mobile products.  They are only 7mm x 7mm in size, and are well suited to small PCB designs. They accept computer graphics as inputs and output broadcast quality video compliant with the following standards: :

Format
Standard
NTSC (SD)
SMPTE-170M
PAL (SD)
ITU-R 624
480p (HD)
EIA-770.2-A
720p (HD)
SMPTE 296
1080i (HD)
SMPTE 274

They have artifact-free scalers that are capable of Perfect TV Sizing through a wide range of input graphics resolutions.  When converting progressive input graphics to interlaced SDTV video, they process each image pixel-by-pixel to ensure the best possible video quality.  Their adaptive flicker filters enhance text quality while removing all flicker from the output video.

After processing the input graphics, the chips pass the data through an ITU-R BT.656 encoder to produce broadcast quality video.  The digital video encoder generates Y/C, CVBS, RGB and YPrPb output signals. These signals can be combined to support RGB + CVBS for SCART, YPrPb + CVBS or multiple CVBS and Y/C DAC outputs.

The FS456 incorporates Macrovision 7 anti-copy protection.  Both the FS455 and FS456 can be programmed to drive CGMS-A broadcast flags for content protection.

*Note: I2C is a registered trademark of Philips Corporation. The FS455/6 Serial I/O bus is similar but not identical to the Philips I2C bus

 

 

Features

  • 88 pin FBGA package
    – Available with Pb-free solder
  • Artifact-free 2D scalers
    – Perfect TV sizing
    – VGA inputs can be upscaled to fit PAL (720x576)
  • Adaptive 2D flicker filter
  • Broadcast quality video encoder
  • Supports multiple progressive input resolutions
    – Minimum 640x480
    – Maximum 1280 x 1024
  • HD output modes
    – 480p
    – 720p
    – 1080i
  • Multiple output formats
    – NTSC, NTSC-EIAJ
    – PAL-B/G/H/I
    – PAL-M, PAL-N, PAL-60
    – Composite, S-Video
    – RGB SCART with CVBS
    – HD YPrPb
    – SD YPrPb
  • Glueless interface to display chips
  • Macrovision 7 compliant (FS456)
    – Includes 480p support
  • I2C* compatible port controls
  • 3.3V, 1.8V operation

 

Application
  • Portable Media Players
  • Digital Set Top Boxes
  • Mobile Phones
  • Gaming Consoles
 
architectual overview

The FS455/6 PC-to-TV Encoders support High Definition (HD) and Standard Definition (SD) outputs and are compatible with most graphic controller chips. Each part takes in digital RGB or YCrCb data and produces SD or HD analog outputs. In SD mode the FS455/6 convert, scale, remove flicker, interlace and encode the data into NTSC or PAL formats. In HD mode the FS455/6 perform color space conversions then insert the required syncs for output. The FS455/6 have the following major sections:

  • Oscillators and PLLs
  • Serial Control Port
  • Input Synchronization
  • Patented Horizontal and Vertical Scaling
  • Programmable Color Space Converter
  • Patented 2D Flicker Filter
  • Studio Grade Encoder
  • HDTV Sync Insertion
  • Configurable Quad 10-bit DAC

 


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